Midpoint formula: $M = ( \frac{x_1+x_2}2 ,\frac{y_1+y_2}2)$

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Intros

Lessons

What is the Midpoint Formula? How to use it?

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Examples

Lessons

Determine the midpoint of the line segment with the given endpoints.
1. $A(3,7), B(9,1)$
2. $A(x+3,y-2), B(x-2,y+9)$
Determine the missing x.
1. $A(3,7), B(9,x)$ ; Midpoint $(6,4)$
2. $A(x,2), B(3x,18)$ ; Midpoint $(-8,10)$

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